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Multi-metal ferrite as a promising catalyst for oxygen reduction reaction in microbial fuel cell.
Jadhav, Gorakhanath S; Mehta, Arun Kumar; Tripathi, Akash; Ghangrekar, Makarand Madhao.
Afiliación
  • Jadhav GS; School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
  • Mehta AK; Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
  • Tripathi A; Department of Civil Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
  • Ghangrekar MM; School of Environmental Science and Engineering, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India. ghangrekar@civil.iitkgp.ac.in.
Environ Sci Pollut Res Int ; 31(42): 54402-54416, 2024 Sep.
Article en En | MEDLINE | ID: mdl-38977554
ABSTRACT
Improving catalytic activity of cathode with noble metal-free catalysts can significantly establish microbial fuel cells (MFCs) as a sustainable and economically affordable technology. This investigation aimed to assess the viability of utilizing tri-metal ferrite (Co0.5Cu0.5 Bi0.1Fe1.9O4) as an oxygen reduction reaction (ORR) catalyst to enhance the performance of cathode in MFCs. Trimetallic ferrite was synthesized using a sol-gel auto-combustion process. Electrochemical evaluations were conducted to assess the efficacy of as-synthesized composite as an ORR catalyst, employing electrochemical impedance spectroscopy (EIS) and cyclic voltammetry (CV). This evaluation revealed that the impregnation of bismuth in the Co-Cu-ferrite structure improves the reduction current response and reduces the charge transfer resistance. Further experiments were conducted to test the performance of this catalyst in an MFC. The MFC with tri-metal ferrite catalyst generated a power density of 11.44 W/m3 with 21.4% coulombic efficiency (CE), which was found to be comparable with commercially available 10% Pt/C used as cathode catalyst in MFC (power density of 12.14 W/m3 and CE of 23.1%) and substantially greater than MFC having bare carbon felt cathode without any catalyst (power density of 2.49 W/m3 and CE of 7.39%). This exceptionally inexpensive ORR catalyst has adequate merit to replace commercial costlier platinum-based cathode catalysts for upscaling MFCs.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oxígeno / Fuentes de Energía Bioeléctrica / Compuestos Férricos / Electrodos Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Alemania
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Oxígeno / Fuentes de Energía Bioeléctrica / Compuestos Férricos / Electrodos Idioma: En Revista: Environ Sci Pollut Res Int Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Alemania